APA
Diehl H. S., . (1955). Elements of healthful living. New York: McGraw Hill.
Chicago
Diehl Harold S, . 1955. Elements of healthful living. New York: McGraw Hill.
Harvard
Diehl H. S., . (1955). Elements of healthful living. New York: McGraw Hill.
MLA
Diehl Harold S, . Elements of healthful living. New York: McGraw Hill. 1955.